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1.天线增加外圈GND的作用？
2.天线根部增加两小条小天线的作用？
请参考下面帖子里的回复。https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/956653/iwr6843isk-iwr6843-decrease-field-of-view-of-elevation
ming zhou 说：1.天线增加外圈GND的作用？
it's primarily to improve the isolation between the adjacent pairs. It also helps shielding any aggressor from the surrounding area.
ming zhou 说：2.天线根部增加两小条小天线的作用？
Those are the structures that provides broadband matching for the antenna ports.
